OK I understand you want all that equipment for ease of use. Pace yourself. Get the RV panel with converter and go camping.
Then start completing your plan to add the inverter and solar. Besides that I am an advocate for separate components so that if one item fails it is far easier to diagnose, adapt, bypass and repair. So I recommend a separate stand alone inverter, separate transfer switch(s), separate charging system. This feeds right back into just get the RV electric panel with converter to do the charging.
You can still enjoy the travelling, outdoors and some nature without toast for a few days. Besides you can make toast on a skillet with propane. Likewise a dozen ways to make coffee with propane instead of a Keurig.
